粘弹性界面裂纹相似界面单元聚缩解  

The Condensation Method with Similar Shape Element for the Solution of Viscoelastic Interface Crack

作　　者：刘甫[1] 任钧国[1] 周建平[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2005年第4期28-31,共4页Journal of National University of Defense Technology

基　　金：国家杰出青年科学基金资助项目(19925209)

摘　　要：提出了粘弹性界面裂纹分析的相似界面单元聚缩解法。该方法在裂纹尖端附近划分相似界面单元,多层相似单元形成一个子结构;然后利用相似界面单元具有类似刚度矩阵的特点,将子结构内的大量自由度聚缩后再求解。作为算例,求解了双粘弹性材料和弹—粘弹性材料矩形板单边裂纹的拉伸问题。The condensation method for the analysis of viscoelastic interface crack with similar shape element is put forward. By this method, similar shape elements are generated near the crack tip, forming a substructure with a large number of similar shape elements. And then the large number of freedom degrees in substructure is condensed out. Identity of stiffness matrix between the similar shape dements is used fully during the process of condensation, The tension of bi-viscoelastic and elastic-viscoelastic material rectangle plate with the single edge crack is solved to illustrate the use of this method.

关 键 词：界面元 粘弹性 相似单元 聚缩 

分 类 号：O34[理学—固体力学]